Removing and installing airbag igniter on driver side N95 and airbag igniter 2 on driver side N250 — AUDI

Removing and installing
airbag igniter on driver side
N95
and
airbag igniter 2 on driver side
N250
Removing
Move steering wheel up and to rear as far as it will go, using full range of steering column adjuster.
WARNING
Observe safety regulations for pyrotechnic components
Chapter
.
Switch on ignition.
With ignition switched on, disconnect battery earth wire
Electrical system
Rep. gr.
27
.
Prise off caps
1
(left and right) on reverse side of steering wheel
arrow
.
Unscrew bolt
arrow
(left and right) on back of steering wheel.
Turn steering wheel to centre position (wheels in straight-ahead position).
WARNING
Before handling airbag units (e.g. unplugging the electrical connector) the mechanic must discharge any static electricity. This can be done by briefly touching the door striker plate, or similar.
Move airbag unit (driver side) slightly away from steering wheel.
Pull connector locking element
4
as far as the stop
arrow
. This will release the electrical connector
2
which can then be unplugged.
Detach airbag unit
1
from steering wheel.
If fitted, unplug electrical connector
3
.
Set down airbag unit with impact cushion facing upwards.
Installing
WARNING
Observe safety regulations for pyrotechnic components
Chapter
.
Before handling airbag units (e.g. unplugging the electrical connector) the mechanic must discharge any static electricity. This can be done by briefly touching the door striker plate, or similar.
Install in reverse order of removal. Observe the following:
Note
Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.
Make sure that wiring is not trapped.
Attach electrical connector for coil connector to coupling for airbag unit at return ring with slip ring.
Position airbag unit in steering wheel.
Screw in the two bolts
arrow
by approx. two turns to secure airbag unit.
Operate horn three times to ensure an even gap width.
Avoid further contact with airbag unit.
Tighten bolts
arrow
.
Press caps into openings in steering wheel.
WARNING
The battery must be connected with the ignition switched on. If pyrotechnic components (e.g. airbag or belt tensioner) are inexpertly repaired, this may result in unwanted triggering after connecting the battery. For safety reasons, when connecting the battery, keep clear of the airbag inflation areas and the belt tensioners/seat belts and make sure there is no-one else in the vehicle.
Switch on ignition.
With ignition switched on, connect battery earth wire
Electrical system
Rep. gr.
27
.
After installing the airbag unit, the following step must be carried out:
Interrogate and erase the event memory of the airbag control unit because unplugging the electrical connectors may have caused faults to be stored
Vehicle diagnostic tester
.
Tightening torque
Component
Nm
Airbag unit (driver side) to steering wheel
7